Machine for making paper pails



E. HUBBARD. Machine for Making Paper-Pails.

No. 226,752. Pat-nted April 20,1880.

Win/asses UNITED STATES PATENT OFFICEQ EBER HUBBARD, OF MEDINA, NEWYORK.

MACHINE FOR MAKING PAPER PAILS.

SPECIFICATION formingpart of Letters Patent No. 226,752, dated April 20,1880.

Application filed February 20, 1880.

To all whom it may concern Beit known that I, EBER HUBBARD, of Medina,in the county of Orleans and State of New York, have invented certainnew and useful Improvements in Machines for Making Paper Pails; and I dohereby declare that the following is afull, clear, and exact descriptionof the invention, which will enable others skilled in the art to whichit appertains to make and use the same,reference being had to theaccompanying drawings, which form a part of this specification, and inwhich- Figure 1 is a side elevation. Fig. 2 is a vertical axial section.Fig. 3is a plan or top view, and Fig. 4 is a horizontal section takenthrough line as x in Fig. 2. V

Similar letters of reference indicate corresponding parts in all thefigures.

This invention has relation to machines for the manufacture of pails,tubs, and kindred articles from paper-pulp; and it consists in theimprovements hereinafter described, and particularly pointed out in theclaims.

In the drawings, A is a platform, (preferably circular in shape,) whichis secured at the lower end of uprights B B. O is a cross or spider,secured upon the standards B B above and parallel to the lower platform,A. This spider is perforated centrally to admit of the insertion of avertical sliding rod, D, the lower end of which works in a sleeve, a, inthe center of platform A.

Upon the rod D, above the spider O, is permanently secured a circulardisk, E, which is connected with an upper annular plate, F, by verticalsteps or plates 6 c. This annular plate F, which is concentric with rodD, constitutes the table which supports the flaring rim of the pulp pailafter this has been shaped in the press.

' The press or mold proper consists of a central cone, G, made ofperforated sheet metal, with an open top and bottom provided withspiders fg, which are perforated centrally to admit of the insertion ofthe rod D. This cone is for the greater part made of two thicknesses ofsheet metal, perforated, the outer thickness being cut away at orstopping short of the upper inclined rim of the cone, so as to form anannular depression, 7L, upon which is fitted a ring, H, of perforatedsheet metal,

which is provided With a rib or bead, 'i, as.

- D. During the process of pressing or molding the pail the cone issuspended upon rod D by means of this pin or lug l.

I I are the outer formers or segments, which are constructed ,ofperforated sheet metal and provided each with a projecting guide, K,which slides in slotted arms L L, projecting outwardly from the upperends of the standards B. The said standards are connected by parallelcircles or hoops MM, upon which are hinged short link-plates N N,connecting with the presser-plates O O, which are so arranged exteriorto the perforated formers or segments I as to break joints with andoverlap the meeting edges of these.

The intermediate formers are provided with arms or fingers m m, whichoverlap the edges of the adjacent presser-plates and slide freelythereon in working the machine, the operation of which is as follows:The upper circular disk or cover, P, having been removed, the centralformeror cone, G, is arranged with its upper spider, f, riding upon lugZ of the central rod, D. This rod is then pushed down as far as it willgo into sleeve a, or until its lower disk, E, to which the annular tableF is rigidly connected,rests upon the lower cross or spider, 0. When inthis position a hollow conical flaring space is formed between thecentral depressed cone, G, and the outer segments, I, into which thepulp is run, after which the cover P is again placed in position, androd D is pulled up, (by hand or by any suitable machinery orarrangementof levers,) which causes the table F to bear against and elevatethe lower ends of the outer formers or segments, I, and theirpresser-plates O, the obliquehinged plates or links N N of which willforce them inwardly against the central cone or former, Gr, carrying thesegments I I before them, so as to compress and shape the pulp evenly onall sides around the cone. The pail having been molded, rod D is againdepressed, which releases the outer segments, I I, from the compressedpulp, cover P is re moved, and the inner cone is turned bytits spider f,so as to allow the lug or pin 1, upon rod D, to slip through slot is,when cone G will, by its own gravity, release itself from the inner sideof the newly-molded pulp pail and drop down upon disk E below theannnlarta ble F, slipping out of ring H, which is held in the pulp bythe ring or bead i, that is'embed- (led in it, (the pulp.) But after thecone is in this manner withdrawn from the ring this will springtogether, and thus release itself from the pulp, in which the rib orhead 1' has formed a croze to l'eceive'the periphery of the pail-bottom.'lhe pail (minus bottom) may now readily be withdrawn from the mold,atter which theseveral parts are again arranged in operating position toreceive a new charge of pulp and form a new pail by arepetition of theoperation, as described.

I. claim and desire to secure by Letters Patent of the United States- 1.In a machine for making pails or analogous articles from paper-pulp, thecombination, with a series of exterior formers arranged in sectionsoperating simultaneously,

and with an inner cone or former, of a detachable spring-ring providedwith an annular bead or rib and placed upon the upper inclined end ofthe inner coneor former, so that when the pulp is compressed around thisin operating the machine the head or rib of said detachable ring shallform a groove or croze near the bottom end of the pail for the insertionof a bottom, substantially as and for the purpose herein shown and setforth.

2. In a machine for making pails or analogous articles from paper-pulp,an inner cone or former provided with a detachable annular rib or beadso arranged that during the process of compressing the pulp around saidinner cone to mold the pail the said rib or head will form a groove orcroze near the bottom end of the pail and on the inside thereof, and,upon releasing the inner cone or former from its pulp casing, it (therib or bead) will automatically contract and detach itself from thepulp, substantially as and for the purpose herein shown and described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

EBER HUBBARD.

Witnesses:

L. F. ZIMMERMAN, J. O. THURSTON.

